fix: Add wget to Dockerfile dependencies

- Install wget package to resolve Docker build error
- Fixes openvscode-server download failure
- Directory renamed to voiceCalendar for consistency

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Dockerfile

@@ -6,6 +6,7 @@ RUN apt-get update && apt-get install -y \
     build-essential \
     curl \
     git \
+    wget \
     && rm -rf /var/lib/apt/lists/*
 
 # Copy requirements first for better caching